s*4-30=18

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Solution for s*4-30=18 equation:


Simplifying
s * 4 + -30 = 18

Reorder the terms for easier multiplication:
4s + -30 = 18

Reorder the terms:
-30 + 4s = 18

Solving
-30 + 4s = 18

Solving for variable 's'.

Move all terms containing s to the left, all other terms to the right.

Add '30' to each side of the equation.
-30 + 30 + 4s = 18 + 30

Combine like terms: -30 + 30 = 0
0 + 4s = 18 + 30
4s = 18 + 30

Combine like terms: 18 + 30 = 48
4s = 48

Divide each side by '4'.
s = 12

Simplifying
s = 12

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